This is indeed a small litttle (adorable) game. only it's kinda sad that there are only 6 flies
my suggestions are at the bottom
for the rest, the tutorial 11/10 xD
sound 8/10 (since you only have 1 catchy tune :/)
gameplay, for now 8/10 but could definetly go up to 12/10
SUGGESTIONS:
Flies: Sansfly (Can Teleport Every Second)
Bob (Fast Fly that Goes Diagonally)
Giant Nyancat (Even Faster but FATTER)
Chocofly (Slow but Goes on screen, goes almost immediatly invisible forever(although you can see him like really, really bad(like hes for 99% transpatent)))
PyroFly (Limited time HP)
JogabbaFly (NyanFly+Bobfly+Sansfly)
Option Tab!!
Scoreboard (With Highscores of Newgrounds)
More Music:
Some Great Bass Music, House Music, Trap Music etc (and Undertale plz Senpaii)
for now 9.5/11 (when updated probably 43/42)